3M Cold Shrink Insulator 8428-...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$97.61
3M Cold Shrink Insulator 8428-12

3M Cold Shrink Insulator 8428-12

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Model: 7000005950

In Stock (leaves warehouse same day if ordered before 3pm ET)

$97.61
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3M, Cold Shrink Insulator 8428-12P, 500-800 kcmil (300-400 mm²), 10/case - Point of purchase

  • Features

    • Simple installation which requires no tools
    • Sealing of terminal lug barrels, conduit couplings and conduit-to-cable breakouts
    • Covers a wide range of cable cross sections
    • Made of EPDM rubber which contains no chlorides or sulfur
    • Withstands temperatures of -40 to 90 degC (-40 to 194 degF)
    • Specially designed for primary insulation of solid dielectric insulated wires and cable splicing rated to 1000 volts


7000132745 - spec sheet

Manufacturer Resources

Product Specs

Product Voltage:
1 kV
Splice Type:
Cold Shrink
Etim Class 8 0:
EC000217
Conductor Material:
Aluminum
Relaxed Tube Length Metric:
304.8 mm
Product Model:
Cold-shrink
Number Of Conductors:
1
Minimum Conductor Size Metric:
300 mm²
Maximum Conductor Size Imperial:
800 kcmil
Maximum Connector Length Metric:
203.2 mm
Minimum Conductor Size Imperial:
600 kcmil
Minimum Operating Temperature Fahrenheit:
-40.0 Degree
Inner Diameter Before Shrink Imperial:
1.937 in
Maximum Conductor Size Metric:
400 mm²
Minimum Operating Temperature Celsius:
-40.0 Degree
Cable Type:
Power Cable
Voltage Application:
Low Voltage
Inner Diameter Before Shrink Metric:
49.2 mm
Inner Diameter After Shrink Imperial:
0.949 in
Application:
Insulation, mechanical protection, repair
Product Material:
EPDM Rubber
Relaxed Tube Length:
12.0 in
Rohs Eu Comments:
RoHS 2011/65/EU compliant without exemption
Maximum Operating Temperature Celsius:
90.0 Degree
Product Color:
Black
Product Type:
Splice
Maximum Operating Temperature Fahrenheit:
194.0 Degree
Maximum Connector Length:
8.0 in
Etim Class 7 0:
EC000217
Halogen Free:
No
Manufacturing Origin:
USA
Department:
Electrical
Inner Diameter After Shrink Metric:
24.1 mm
Country Of Origin:
United States
Product Subgroup:
Splice Kits
Product Group:
Wire Connectors & Terminals

3M 7000005950 – Frequently Asked Questions

1) What cable diameters does the 3M 8428-12 cold shrink tube cover?
The 8428 series cold shrink insulator goes on at an inside diameter of 1.937 in (49.2 mm) and recovers down to 0.949 in (24.1 mm). Anything in the substrate you are covering has to fall inside that window: larger than about 0.949 in so the rubber grips it under tension, and smaller than 1.937 in so it slides over in the first place.
2) Will a 12 inch cold shrink insulator cover my compression lug barrel?
The tube relaxes to 12.0 in (304.8 mm) long and is rated for connectors up to 8.0 in (203.2 mm) of barrel length, which leaves roughly two inches of overlap onto the cable insulation at each end. If your long barrel splice or lug is longer than 8 inches, step up to a longer tube rather than trying to stretch this one.
3) What voltage is the 3M 8428 cold shrink insulator rated for?
It is a low voltage product, rated 1 kV, intended for primary insulation of solid dielectric insulated wire and cable splices up to 1000 volts. It is not a medium voltage splice body, so do not use it on 5 kV, 15 kV or 35 kV shielded cable.
4) Do I need a heat gun or torch to install this?
No flame and no tools. Cold shrink means the EPDM tube is factory expanded onto a removable core; you position it and pull the core out, and the rubber contracts onto the connector on its own. That makes it usable in vaults, manholes and other spots where an open flame is not allowed and where a heat shrink tube would be awkward to work around energized gear.
5) Does the 3M 8428 insulator replace the connector, or do I still need a splice barrel?
It is the insulating and sealing cover only, not the electrical connection. You still make the joint with a compression splice, for example a Burndy Hylink long barrel copper compression splice, then cover the finished barrel with the cold shrink tube. Match the tube's 8 inch maximum connector length against whatever barrel you choose.
6) Can I use this cold shrink insulator outdoors or in a cold climate?
Service range is -40 to 90 C (-40 to 194 F), so it holds up in outdoor pad and pole applications and in freezer or cold storage environments. The EPDM rubber contains no chlorides or sulfur, which is why it is used against bare metal barrels without corrosion concerns.
7) Besides splices, what else can the 8428 tube be used to seal?
Three jobs beyond straight splice insulation: sealing terminal lug barrels, sealing conduit couplings, and covering conduit-to-cable breakouts. The catalogued application is insulation, mechanical protection and repair, so it also works as a jacket repair sleeve on damaged single conductor power cable.
8) Is the 3M 8428-12 sized for one conductor or a multi-conductor cable?
One conductor. It is specified for single conductor power cable, aluminum conductor, up to 800 kcmil (400 mm2). For a three conductor run you use one tube per phase.
9) What is the difference between 3M 8428-12 and 8428-12P?
Same 12 inch cold shrink insulator; the P suffix is the point of purchase packaged version, sold 10 per case, MPN 7000132745. The plain 8428-12 carries MPN 7000005950. Order the P version if you want the retail carded pack, otherwise the specs are identical.
10) Is the 3M cold shrink insulator RoHS compliant and halogen free?
RoHS 2011/65/EU compliant without exemption. It is not halogen free, so if your facility spec calls for low smoke zero halogen materials this one will not meet it. Country of origin is the United States.
How fast can I get the 3M 7000005950 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the 3M 7000005950 come with a warranty?
Absolutely. The 3M 7000005950 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the 3M 7000005950?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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